充气机找不到构造函数

Question

这可能是我遇到过的最烦人的错误。当我去膨胀自定义视图并将其传递给活动时，我得到了这样的信息：

02-02 10:34:08.080: ERROR/AndroidRuntime(839): java.lang.RuntimeException: Unable to start activity 

ComponentInfo{android.appion.ResourceManager.UI/android.appion.ResourceManager.UI.ARMHomescreen}: android.view.InflateException: Binary XML file line #62: Error inflating class android.appion.ResourceManager.NUI.ARMPublicService$WorkBench
02-02 10:34:08.080: ERROR/AndroidRuntime(839):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2787)
02-02 10:34:08.080: ERROR/AndroidRuntime(839):     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2803)
02-02 10:34:08.080: ERROR/AndroidRuntime(839):     at android.app.ActivityThread.access$2300(ActivityThread.java:135)
02-02 10:34:08.080: ERROR/AndroidRuntime(839):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2136)
02-02 10:34:08.080: ERROR/AndroidRuntime(839):     at android.os.Handler.dispatchMessage(Handler.java:99)
02-02 10:34:08.080: ERROR/AndroidRuntime(839):     at android.os.Looper.loop(Looper.java:144)
02-02 10:34:08.080: ERROR/AndroidRuntime(839):     at android.app.ActivityThread.main(ActivityThread.java:4937)
02-02 10:34:08.080: ERROR/AndroidRuntime(839):     at java.lang.reflect.Method.invokeNative(Native Method)
02-02 10:34:08.080: ERROR/AndroidRuntime(839):     at java.lang.reflect.Method.invoke(Method.java:521)
02-02 10:34:08.080: ERROR/AndroidRuntime(839):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
02-02 10:34:08.080: ERROR/AndroidRuntime(839):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
02-02 10:34:08.080: ERROR/AndroidRuntime(839):     at dalvik.system.NativeStart.main(Native Method)
02-02 10:34:08.080: ERROR/AndroidRuntime(839): Caused by: android.view.InflateException: Binary XML file line #62: Error inflating class android.appion.ResourceManager.NUI.ARMPublicService$WorkBench
02-02 10:34:08.080: ERROR/AndroidRuntime(839):     at android.view.LayoutInflater.createView(LayoutInflater.java:503)
02-02 10:34:08.080: ERROR/AndroidRuntime(839):     at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:565)
02-02 10:34:08.080: ERROR/AndroidRuntime(839):     at android.view.LayoutInflater.rInflate(LayoutInflater.java:618)
02-02 10:34:08.080: ERROR/AndroidRuntime(839):     at android.view.LayoutInflater.rInflate(LayoutInflater.java:621)
02-02 10:34:08.080: ERROR/AndroidRuntime(839):     at android.view.LayoutInflater.rInflate(LayoutInflater.java:621)
02-02 10:34:08.080: ERROR/AndroidRuntime(839):     at android.view.LayoutInflater.inflate(LayoutInflater.java:407)
02-02 10:34:08.080: ERROR/AndroidRuntime(839):     at android.view.LayoutInflater.inflate(LayoutInflater.java:320)
02-02 10:34:08.080: ERROR/AndroidRuntime(839):     at android.view.LayoutInflater.inflate(LayoutInflater.java:276)
02-02 10:34:08.080: ERROR/AndroidRuntime(839):     at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:207)
02-02 10:34:08.080: ERROR/AndroidRuntime(839):     at android.app.Activity.setContentView(Activity.java:1654)
02-02 10:34:08.080: ERROR/AndroidRuntime(839):     at android.appion.ResourceManager.UI.ARMHomescreen.onCreate(ARMHomescreen.java:141)
02-02 10:34:08.080: ERROR/AndroidRuntime(839):     at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1069)
02-02 10:34:08.080: ERROR/AndroidRuntime(839):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2751)
02-02 10:34:08.080: ERROR/AndroidRuntime(839):     ... 11 more
02-02 10:34:08.080: ERROR/AndroidRuntime(839): Caused by: java.lang.NoSuchMethodException: WorkBench(Context,AttributeSet)
02-02 10:34:08.080: ERROR/AndroidRuntime(839):     at java.lang.Class.getMatchingConstructor(Class.java:660)
02-02 10:34:08.080: ERROR/AndroidRuntime(839):     at java.lang.Class.getConstructor(Class.java:477)
02-02 10:34:08.080: ERROR/AndroidRuntime(839):     at android.view.LayoutInflater.createView(LayoutInflater.java:475)
02-02 10:34:08.080: ERROR/AndroidRuntime(839):     ... 23 more

我从中得到的是“嘿，我一定忘记了将 AttributeSet 添加到我的视图中，傻瓜”，事实并非如此！据我所知，我的构造函数是完美的。谁能告诉我我错过了什么，或者日食是否直接把我搞砸了？

public class WorkBench extends GridView {
    private final String TAG = "WorkBench";

    // The position in the WorkArea
    public String TITLE;
    private String[] DEVICE = new String[6];

    private int mSelection;
    public WorkBench(Context context) {super(context);}
    public WorkBench(Context context, AttributeSet attrs) {
        super(context, attrs);
        setAdapter(new GridAdapter());
    }
    public WorkBench(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
    }

... Rest of class definition

我调用 WorkBench 的地方（WorkBench 和此函数位于服务中，这就是我转换为 Activity 的原因）

public WorkBench createBench(Context context) {
    return (WorkBench)((Activity)context).findViewById(R.id.workbench);
}

和 XML

<view               class="android.appion.ResourceManager.NUI.ARMPublicService$WorkBench"
    android:id="@+id/workbench"
    android:background="@+drawable/woodtexture1"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:numColumns="2" />

任何提示都会有帮助，谢谢 ～伊顿

Answer 1

要么你的class错了，要么你的class错了。

您有：

class="android.appion.ResourceManager.NUI.ARMPublicService$WorkBench"

当且仅当 WorkBench 是静态内部类时，这才有效。如上所示，WorkBench 的类定义适用于非静态内部类。

由于在这种情况下不可能使用非静态内部类，因此您的 class 可能没问题——只需将 WorkBench 调整为静态内部类，您应该身体状况良好。